374 results about "Stack effect" patented technology

A portable heater adapted for use in a recreational enclosure or temporary work enclosure includes a housing having an air inlet on the lower front face. A gas supply is partially enclosed by the housing which provides propane to the mouth of a burner venturi located within the housing. Air is drawn through the air inlet and also enters the mouth of the burner venturi. The air and gas are mixed thoroughly as they travel upwardly through the burner venturi. A chimney effect increases fresh air flow velocity into the burner venturi and allows the heater to operate at a reduced fuel gas pressure. Upon exiting the burner venturi, the air/gas mixture is to a plenum and radiant surface where combustion takes place. Any conventional means may be provided to ignite the air/gas mixture in order to cause combustion. The combustion products deflect off a deflector, which is cooled on a rear face by air flow through the housing, which decreases the temperature of the combustion products before exiting an outlet. An oxygen depletion system (ODS) shuts off the portable heater when oxygen levels begin to drop and consequently carbon monoxide levels begin to rise.

A heat dissipation device according to the present invention includes an inner tube to which heat from LED modules is to be transferred, first fins protruding from an outer surface of the inner tube in a direction crossing the outer surface, and an outer tube covering the inner tube. Moreover, heat is transferred from the surfaces of the inner tube, outer tube and first fins which form ventilation paths (medium paths) to the air flowing at an increased flow rate by a stack effect.

A lighting device combined with an air purification feature is disclosed. At least one function of the device is to provide high quality directional light for general lighting purposes. An additional function is to decompose VOCs and/or destroy microbes in the ambient air. The heat generated by white LEDs is utilized to generate air flow through the device. The geometry is designed to utilize the chimney effect and maximize volumetric flow. The circulated air is purified by a photocatalytic layer applied to the interior surface of the device. The lighting device can be built into pendant luminaires or lamps, thus ensuring vertical orientation of the light module. The exemplary embodiments may be applied in public places, hospitals, ward rooms, and other locations where a cost effective disinfection method is needed.

Disclosed is a method for preparing quasi-periodic micro-lens arrays through femtosecond laser wet etching. The method comprises that the velocity of a target material moved by an accurate processing platform is controlled according to the individual average size of quasi-periodic micro lenses needed to be processed, femtosecond lasers act for one pulse on the target material surface at a fixed interval, and a light damage area is produced on the target material with the acting focus of each femtosecond laser pulse serving as a center; chemical corrosion is performed on the target material processed by the femtosecond lasers through a hydrofluoric acid solution with a volume concentration in a range of 1% to 10%, and ultrasonic water-bath heating is assisted; and the corroded target material is cleaned thoroughly in deionized water to obtain a template finished product of mass quasi-periodic micro-lens arrays. The method has the advantages of being high in efficiency, low in cost, controllable in micro-lens individual shape size and the like, and negative effects of air breakdown effects of laser focusing, periodic light field coupling stacking effects and the like generated in a dodging process can be prevented effectively.

The invention relates to a novel energy-saving glass curtain wall, wherein the shortcoming of natural wind is compensated through mechanical assisted air supply mode, and the problem of unsustainable and unstable airflow is solved. An air inlet is arranged on the windward side, an air outlet is arranged on the leeward side, the air inlet and the air outlet are connected through a ventilating duct or 'an architectural layer ventilating duct' to ensure the air flow smoothly. The distance between the air inlet and the air outlet is increased, the differential pressure of air can be realized, and the effect of 'a chimney effect' is improved. A fireproof grade of an outside curtain wall is lower than a fireproof grade of an inside curtain wall, and the fireproof capacity of a double layer curtain wall is basically same as a single layer curtain wall, the fireproof capacity can be improved through a smoke detector and a spray system. In summer, the invention adopts the mode of spray desuperheating through a fire-fighting spray system, and in daytime pollution-free power supply is supplied to an air supply system and a draught fan through solar energy. According to the improvement, the integrated effect of the double layer glass curtain wall and 'a climate adaptive capacity' is hoped to be improved, and a new idea is provided to the development of the curtain wall and the technological innovation.

Disclosed is a support fork translation stacking manipulator which relates to a stacking manipulator. The invention solves the problem of bad stacking effect of the material bag which is very flexible and has the material with good liquidity inside the material bag found in the manipulator used by the stacking robot in the prior art. Two linear bearings (8) of the stacking manipulator are respectively mounted on the lower end surfaces of the front cross beam (2-1) and the back cross beam (2-2) of a frame (2); both ends of a support fork cylinder (12) are respectively mounted on the lower end surfaces of the left stringer (2-6) and the right stringer (2-7) of the frame (2); the cylinder rod of the support fork cylinder (12) is connected with a joint (11); a support fork (5) is mounted on the lower end surface of the transverse plate (10-2) of a support (10); two air cylinders (6) with guide rods are respectively mounted on the inner end surfaces of the front cross beam (2-1) and the back cross beam (2-2) of the frame (2); two pressing plates (4) are respectively mounted on the lower end surface of a guide rod (6-1); a retaining plate (7) is mounted on the lower end surfaces of two middle cross beams (2-3). The support fork translation stacking manipulator has good stacking effect on the material bags which are very flexible and have the materials with good fluidity inside the material bags; the operation of the support fork translation stacking manipulator is stable.

The invention discloses an autoignition coal gangue flow slope extinguishment and steadiness comprehensive treatment technology, and belongs to the field of treatment of mineral product waste and ecological environment recovery. The autoignition coal gangue flow slope extinguishment and steadiness comprehensive treatment technology comprises the steps that shallow-hole curtain filling is adopted, and after dedicated grouting pipes (4) which are preset are regularly planted into a slope body of a coal gangue flow slope and grouting is carried out, and steel wire ropes (9) are used for carrying out net-shaped connection on ground surface nodes (5) of the grouting pipes (4). The effect of steel rib piling and the effect of grid connecting piling can be achieved, the effect of solidification grouting or the effect of curtain grouting can be achieved, flow of air and water in the slope body of the coal gangue flow slope can be effectively stopped, the chimney effect is eliminated, when evaporation of water is received, cooling extinguishment is preferentially carried out, a curtain is solidified to block the air and prevent fire, and can achieve the effect of preventing a forward landslide, the foundation is laid for later-stage surface layer ejection grouting blocking and soil dressing vegetation recovery, and the autoignition coal gangue flow slope extinguishment and steadiness comprehensive treatment technology is good in enablement and easy to operate, can ensure that ecological environment comprehensive treatment of the coal gangue flow slope can be achieved fundamentally and rapidly, and is beneficial to human and the society.

The invention relates to a solar photovoltaic-temperature difference automatic temperature control joint power generation unit; and a solar photovoltaic power generation system serves as main energy, and semi-conductor temperature difference power generation serves as the important auxiliary means of battery temperature feedback and control. A semi-conductor temperature difference power generation module generates power by utilizing the temperature difference between the back side of a solar cell and the ambient temperature, and transmits the power into a control system to regulate a fan in a radiator as automatic feedback. A controller can automatically judge whether the temperature of a cooling medium of a solar panel is too high or not, and determine whether to start an additional strong radiating fan in a chimney-type cooler or not. The chimney-type cooler achieves the purpose of reducing the temperature of the cooling medium by utilizing a chimney effect, a cooling effect is in inverse proportion with the temperature, so that the roles of automatically feedback and regulation are played. According to the unit, semi-conductor temperature difference power generation and solar photovoltaic power generation technologies are effectively integrated, low-grade heat when the solar cell generates power is fully utilized and converted into radiating energy, so that a great role of improving the efficiency of the solar photovoltaic cell is played.

The invention provides an amino acid block copolymer with a formula I or a formula II structure and preparation method of the amino acid block copolymer with the formula I or the formula II structure. The invention further provides a compound comprising the amino acid block copolymer and aqueous medium. Poly, namely, ethylene glycol in the copolymer, is hydrophilic block, and can protect stability of nano particles in blood circulation; phenylalanine provides high pi-pi stacking effect and hydrophobic effect to stabilize assembling of the nano particles and to prevent the nano particles from disassembling in blood circulation; and glumatic acid unit provides effective drug carrying groups. The amino acid block copolymer is simple to prepare, good in biocompatibility, good in stability, easy to compound with a plurality of bioactive ingredients to achieve efficient drug carrying, and capable of controlled releasing the active pharmaceutical ingredients. The compound nano particles have wide application prospect in the bio-medical field, and particularly in the oncotherapy field.

The invention discloses a stacking machine for corrugated paperboard production, and belongs to the field of corrugated paperboard production. The stacking machine for corrugated paperboard productioncomprises a support plate, and the four corners of the bottom of the support plate are fixedly connected with anti-slip support legs. The top of the support plate is provided with a conveyor belt anda driving device of the conveyor belt. Paperboards are conveyed by the conveyor belt to the position under a liftable sucking device to be tightly sucked, then a first driving motor is powered on todrive a first threaded rod to rotate, then the liftable sucking device is driven to do reciprocated motion left and right, and the paperboards are stacked to an L-shaped transfer board, automatic stacking work is done, the work efficiency is improved, and the labor intensity is reduced. After a certain number of paperboards are stacked, the paperboards can be neatened through cooperation of a fixing plate and a movable neatening device, so that the paperboards are stacked in order, the stacking effect is good, manual neatening in the later stage is not needed, and the work efficiency is high.

The invention discloses a pulse amplitude measurement circuit and method capable of reducing counting losses. Related circuits comprise a forming and amplifying circuit, a high-speed AD (analog-to-digital) conversion circuit, a quick peak searching and discharging control circuit and a signal fast-recovery circuit, wherein the forming and amplifying circuit is used for widening and forming random pulse signals output by a nuclear detector into pulse shapes which have flat tops and can facilitate amplitude measurement and outputting the signal amplitude after amplifying the signal amplitude; the high-speed AD conversion circuit is used for continuously sampling pulse signals output by the forming and amplifying circuit, converting the pulse signals into digital quantities and then outputting the digital quantities; the quick peak searching and discharging control circuit is used for performing amplitude calculation on waveforms of digital signals output by the high-speed AD conversion circuit, performing storage after amplitude calculation is finished, and outputting discharging control signals to the signal fast-recovery circuit; the signal fast-recovery circuit is used for performing control according to the received discharging control signals and recovering the amplitude of pulses output by the forming and amplifying circuit to the base line level. With the adoption of the circuit and the method, counting rate losses caused by the stacking effect of nuclear pulse signals under the condition of the high counting rate can be reduced, and the circuit is simple and reliable in structure and convenient to popularize.

The invention relates to a method for continuously drawing humid and hot air on the ground according to the chimney effect by utilizing a chimney type air guide tower so that the humid and hot air rapidly floats to break the up-and-down convection of the humid and hot air and dry and cold air by the greenhouse effect and achieve the aims of controlling ground air temperature and humidity, reducing carbon dioxide and dust concentration in ground air and artificially raining and environmental air conditioning equipment. The application of the technology realizes the aim that people reform nature by utilizing nature. The method and the equipment can be used for controlling the temperature and the humidity of urban ground air and carrying out artificial rainfall and also used for preventing great loss on agriculture, forestry, electric industry, communication industry, and the like by natural disasters, such as strong wind, rainstorm, thunder, lightning, hail, and the like due to strongly convective weather; meanwhile, cool weather is more beneficial to the growth of crops and prevents damage by diseases and insects. In the aspect of fishery, the invention can improve the oxygen dissolving amount of a pond and prevent the generation of the phenomenon of fish dead by pond turn-over; meanwhile, cool water temperature is more beneficial to the growth of aquatic animals and plants.

A ventilation unit for use with a heating or cooling system that is decentralized and does not require large conduits is disclosed. The system includes at least one fresh air intake; a fan operatively connected to the at least one fresh air intake for drawing air from outside of a space into the fresh air intake; and at least one ventilation unit located in the room. The ventilation unit includes a conduit defining an air passage having a first and second opposite ends, a diffuser operatively connected to the fresh air intake for outputting fresh air near the second opposite end of the conduit and for drawing ambient air from the room through the first opposite end. The ventilation unit also includes a heating element located downstream from the first opposite end inside the conduit. The ambient air is entrained towards the heating element which heats the ambient air, and the heated air is ventilated into the room at the second opposite end of the conduit by the action of a chimney effect and the fresh air diffuser. The system provides for adequate ventilation through the use of small conduits due to the decentralized heating of the air.

A wind power generation system using a stack effect of a high-speed elevator in a high-rise building is provided which includes: a wind turbine rotating with a wind generated from movement of an elevator car vertically moving in an internal space of an elevator core disposed in the high-rise building; a wind power generator converting kinetic energy generated with the rotation of the wind turbine into electric energy; and a storage battery storing the electric energy.

The invention provides a water logging and air cooling combined passive containment cooling system and method. The system is completely self-started, free of intermediate control procedure and high in reliability. The is characterized by comprising a cooling pool and an air flow guide cover, wherein the cooling pool can submerge a containment, the air flow guide cover is arranged at the outside of the containment in the cooling pool, the air flow guide cover is provided with a surrounding part surrounding the containment, and a flow guide part located above the top part of the containment and extending to the atmosphere, the surrounding part and the flow guide part are connected into an entirety, the cooling pool is provided with an air inlet, and the air inlet of the cooling pool, the surrounding part of the air flow guide cover and the flow guide part form an air flow passage with a chimney effect.

LED-based lighting fixtures suitable for general illumination in surface-mount or suspended installations, in which heat dissipation properties of the fixtures are significantly improved by decreasing thermal resistance between LED junctions and the ambient air. In various examples, improved heat dissipation is accomplished by increasing a surface area of one or more heat-dissipating elements proximate a trajectory of air flow through the fixture. In one aspect, various structural components of the fixtures are particularly configured to create and maintain a 'chimney effect' within the fixture, resulting in a high air-flow rate, natural convection cooling system capable of efficiently dissipating the waste heat from the fixture without active cooling.

The invention relates to a foldable vehicle body, which comprises a vehicle body folding mechanism, a chassis folding mechanism, a front wheel mechanism and a rear wheel mechanism, wherein the vehicle body folding mechanism is of a four-linkage mechanism formed by a first linkage, a second linkage, a third linkage and a fourth linkage, so as to form a user sitting space; the chassis folding mechanism is arranged at the bottom part of the vehicle body folding mechanism and is pivoted on the first linkage by one end of a fifth linkage; the fifth linkage is provided with a supporting part used for pushing against on the first linkage; the front wheel mechanism is arranged at the bottom part of the vehicle body folding mechanism; and the rear wheel mechanism is pivoted on the other end of the fifth linkage. In the invention, the vehicle body can be folded by adopting the vehicle body folding mechanism and the chassis folding mechanism, and the shaft distance between the front wheel and the rear wheel can be shortened to fully reduce the size of the vehicle body, so as to achieve the stacking effect compared with the same type of vehicle body and greatly save the parking space; furthermore, the foldable vehicle body can be applied to a novel public transportation systems in cities.

The present invention discloses a cool feeling hydrogel, which is a peppermint oil and xylitol wrapped acrylamide / N-vinylpyrrolidone copolymer hydrogel. The hydrogel uses the peppermint oil and xylitol icy feeling combination to bring the human body super strong icy cool feeling, and the icy cool feeling effect had good durability. Meanwhile, a textile fabric prepared from the hydrogel is always in a point contact with human body to ensure that textiles may not be pasted on the skin due to increase of the amount of sweat, and the hydrogel is used, to be equivalent, the inner layer of the textile is additionally provided with boss holes, an air layer may be exist in the boss holes, when the textile inner space is large, stack effect is easy to produce, the body heat loss is greatly increased, the body temperature is reduced, textile ventilation and breathability perspiration properties can be improved, and the textile microclimate comfort property can be improved. The present invention also provides a preparation method of the cool feeling hydrogel, and a cool feeling fabric and a preparation method of the cool feeling fabric.

The invention relates to the chemiluminescent immunoassay, in particular to a quantitative kit for detecting dog IL-6 by adopting homogeneous chemiluminescent immunoassay and a use method thereof. A detection solution adopted by the kit contains DNA1-IL-6 antibody1 conjugate, DNA2-IL-6 antibody2 conjugate, DNA3 for marking acridinium ester (AE), restriction enzyme and graphene oxide; DNA1 and DNA2have six complementary bases, the DNA3 contains two enzyme digestion sites, and has nine bases to complementarily pair with the DNA1 and the DNA2; the DNA3 is adsorbed on the surface of the grapheneoxide through the Pai-Pai stacking effect, and the chemiluminiscence of the AE marked at the tail end is quenched due to the occurring of the CRET. The method is the homogeneous immunoassay method, the operation is simple, and the analysis time is greatly shortened, the measure of the single sample can be accomplished in 5-10min, by combining the ortho-bunting effect and a chemiluminescent molecular beacon, a switch of the graphene quenching mechanism is induced through immunoreaction, thereby releasing a chemiluminiscence signal without washing, separation and purification steps.

The invention relates to an energy-saving Chinese date drying bin, belongs to the field of the agricultural product drying equipment, and particularly relates to drying equipment for drying stored and harvested Chinese dates of regions with arid climate and large temperature difference. The energy-saving Chinese date drying bin comprises support legs, a bin bottom plate, a bin gate, an external bin plate, a bin cover, a wind-proof cover plate, an internal bin plate, and an unpowered fan. Chinese dates are put in a cavity between the external bin plate and the internal bin plate. The pressure difference of the bottom outside the drying bin and the top part in the drying bin is generated by utilizing the stack effect and the assist of the unpowered fan, so that the air movement is formed. The air enters from a vent hole, and penetrates a Chinese date layer in the middle to take gasified moisture in the Chinese dates away, an air flow flowing upwards is concentrated and formed in an air channel chamber of the internal bin plate, and finally, the air flow is exhausted from the unpowered fan on the top, so that the aim of removing the moisture and drying the Chinese dates. According to the energy-saving Chinese date drying bin, the investment is low, and no operating cost is required. The energy-saving Chinese date drying bin adopts normal temperature air to dry the Chinese dates, so that the energy-saving Chinese date drying bin has the advantages of stability in keeping the quality of the Chinese dates, energy saving, labor saving, and reduction in environmental pollution. Moreover, the energy-saving Chinese date drying bin has obvious economic and social benefits.